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婴幼儿耳的特点

婴幼儿耳的特点. 付伟. 1. 耳郭易生冻疮 因耳郭皮下组织很少，血循环差，感觉神经末梢丰富，易生冻疮。虽天暖可自愈，但到冬季不加保护又会复发。. 2. 外耳道易生疖 眼泪、脏水流入外耳道，或掏耳屎损伤外耳道，可使外耳道皮肤长疖，张口及咀嚼时疼痛加剧。. 3. 易患中耳炎 婴幼儿的咽鼓管比较短，管腔宽，位置平直，鼻咽部的细菌易经咽鼓管进入中耳，引起急性化脓性中耳. 4. 对噪声敏感

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婴幼儿耳的特点

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  1. 婴幼儿耳的特点 付伟

  2. 1.耳郭易生冻疮 因耳郭皮下组织很少，血循环差，感觉神经末梢丰富，易生冻疮。虽天暖可自愈，但到冬季不加保护又会复发。

  3. 2.外耳道易生疖 眼泪、脏水流入外耳道，或掏耳屎损伤外耳道，可使外耳道皮肤长疖，张口及咀嚼时疼痛加剧。

  4. 3.易患中耳炎 婴幼儿的咽鼓管比较短，管腔宽，位置平直，鼻咽部的细菌易经咽鼓管进入中耳，引起急性化脓性中耳

  5. 4.对噪声敏感       婴幼儿耳蜗感受能力较成人强，听觉比成人敏锐，噪声是指使人感到吵闹或为人所不需要的声音，噪声是一种环境污染，可以影响幼儿的健康。 噪声在50分贝以下，属于比较安静的环境。噪声达60分贝，就开始影响睡眠和休息。如果经常处于80分贝以上的噪声环境中，就会导致睡眠不足、烦躁不安、消化不良，以及听觉迟钝。

  6. 作业 1、简述易患中耳炎的原因 2、简答噪声对婴幼儿耳的影响

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